drm/asahi: Add the Asahi driver for Apple AGX GPUs

Signed-off-by: Asahi Lina <[email protected]>

Author: asahilina

drivers/gpu/drm/Kconfig

@@ -360,6 +360,8 @@ source "drivers/gpu/drm/solomon/Kconfig"
 
 source "drivers/gpu/drm/sprd/Kconfig"
 
+source "drivers/gpu/drm/asahi/Kconfig"
+
 config DRM_HYPERV
 	tristate "DRM Support for Hyper-V synthetic video device"
 	depends on DRM && PCI && MMU && HYPERV

drivers/gpu/drm/Makefile

@@ -197,3 +197,4 @@ obj-y			+= gud/
 obj-$(CONFIG_DRM_HYPERV) += hyperv/
 obj-y			+= solomon/
 obj-$(CONFIG_DRM_SPRD) += sprd/
+obj-$(CONFIG_DRM_ASAHI) += asahi/

drivers/gpu/drm/asahi/Kconfig

@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: GPL-2.0
+
+config DRM_ASAHI
+	tristate "Asahi (DRM support for Apple AGX GPUs)"
+	depends on RUST
+	depends on DRM
+	depends on (ARM64 && ARCH_APPLE) || (COMPILE_TEST && !GENERIC_ATOMIC64)
+	depends on MMU
+	select DRM_SCHED
+	select IOMMU_SUPPORT
+	select IOMMU_IO_PGTABLE_LPAE
+	select DRM_GEM_SHMEM_HELPER
+	help
+	  DRM driver for Apple AGX GPUs (G13x, found in the M1 SoC family)
+
+config DRM_ASAHI_DEBUG_ALLOCATOR
+	bool "Use debug allocator"
+	depends on DRM_ASAHI
+	help
+	  Use an alternate, simpler allocator which significantly reduces
+	  performance, but can help find firmware- or GPU-side memory safety
+	  issues.

drivers/gpu/drm/asahi/Makefile

@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_DRM_ASAHI) += asahi.o